1 /* getrusage -- Get resource usage information about processes. Hurd version.
2 Copyright (C) 1999-2013 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
21 #include <sys/resource.h>
23 #include <mach/task_info.h>
26 /* Return resource usage information on process indicated by WHO
27 and put it in *USAGE. Returns 0 for success, -1 for failure. */
29 __getrusage (who
, usage
)
30 enum __rusage_who who
;
33 struct task_basic_info bi
;
34 struct task_events_info ei
;
35 struct task_thread_times_info tti
;
36 mach_msg_type_number_t count
;
42 count
= TASK_BASIC_INFO_COUNT
;
43 err
= __task_info (__mach_task_self (), TASK_BASIC_INFO
,
44 (task_info_t
) &bi
, &count
);
46 return __hurd_fail (err
);
48 count
= TASK_EVENTS_INFO_COUNT
;
49 err
= __task_info (__mach_task_self (), TASK_EVENTS_INFO
,
50 (task_info_t
) &ei
, &count
);
51 if (err
== KERN_INVALID_ARGUMENT
) /* microkernel doesn't implement it */
52 memset (&ei
, 0, sizeof ei
);
54 return __hurd_fail (err
);
56 count
= TASK_THREAD_TIMES_INFO_COUNT
;
57 err
= __task_info (__mach_task_self (), TASK_THREAD_TIMES_INFO
,
58 (task_info_t
) &tti
, &count
);
60 return __hurd_fail (err
);
62 time_value_add (&bi
.user_time
, &tti
.user_time
);
63 time_value_add (&bi
.system_time
, &tti
.system_time
);
65 memset (usage
, 0, sizeof (struct rusage
));
67 usage
->ru_utime
.tv_sec
= bi
.user_time
.seconds
;
68 usage
->ru_utime
.tv_usec
= bi
.user_time
.microseconds
;
69 usage
->ru_stime
.tv_sec
= bi
.system_time
.seconds
;
70 usage
->ru_stime
.tv_usec
= bi
.system_time
.microseconds
;
72 /* These statistics map only approximately. */
73 usage
->ru_majflt
= ei
.pageins
;
74 usage
->ru_minflt
= ei
.faults
- ei
.pageins
;
75 usage
->ru_msgsnd
= ei
.messages_sent
; /* Mach IPC, not SysV IPC */
76 usage
->ru_msgrcv
= ei
.messages_received
; /* Mach IPC, not SysV IPC */
80 /* XXX Not implemented yet. However, zero out USAGE to be
81 consistent with the wait3 and wait4 functions. */
82 memset (usage
, 0, sizeof (struct rusage
));
93 weak_alias (__getrusage
, getrusage
)